public interface ASTTransformation
 You must annotate this class with GroovyASTTransformation so that Groovy knows which
 CompilePhase to run in.
GroovyASTTransformation| Modifier and Type | Method and Description | 
|---|---|
| void | visit(ASTNode[] nodes,
     SourceUnit source)The method is invoked when an AST Transformation is active. | 
void visit(ASTNode[] nodes, SourceUnit source)
nodes - The ASTnodes when the call was triggered. Element 0 is the AnnotationNode that triggered this
      annotation to be activated. Element 1 is the AnnotatedNode decorated, such as a MethodNode or ClassNode. For
      global transformations it is usually safe to ignore this parameter.source - The source unit being compiled. The source unit may contain several classes. For global transformations,
      information about the AST can be retrieved from this object.